DF3A001 Concentric Flange Butterfly Valve Wormgear and PN10 PN16
DF3A001 is a concentric flanged butterfly valve with wormgear operation, designed for on-off and throttling service in water, low-pressure process, and heating systems. It connects to pipe flanges with bolts and uses a central disc to control flow, offering a compact solution where space is limited. The wormgear provides smooth manual operation and position retention under pressure.
| Model Code | DF3A001 |
|---|---|
| Product Type | Concentric Flange Butterfly Valve[Wormgear and PN10 PN16] |
| Category | Concentric Flanged Butterfly Valves |
| Manufacturer | Tianjin MIC Valve Co., Ltd. |
| Size and Pressure Rating | Confirmed on quotation |
| Certification | ISO 9001 and ISO 14001 certified plant |
| Model | DF3A001 |
| Valve Type | Concentric flanged butterfly valve with wormgear |
| Connection | Flanged, bolted to pipe flanges |
| Operation | Quarter-turn, manual with wormgear |
| Series | DF3A001 flanged butterfly valve series |
| Nominal Diameter Range | DN10 to DN2600 mm |
| Nominal Pressure Range | 0.05 to 4.0 MPa |
What This Model Gives You
- Flanged connection allows secure bolted attachment to existing pipe flanges without welding
- Concentric disc design ensures low torque and smooth operation at low pressure
- Wormgear actuation provides precise control and holds position under pressure
- Compact size reduces space needed in piping layouts compared to gate valves
- Bidirectional sealing with resilient seat allows installation in either direction
- Part of a valve programme certified to ISO 9001 and ISO 14001
Problems It Removes
- Gate valves are too long and heavy for tight spaces between flanges in retrofit projects
- Manual operation without gear requires high effort and lacks position retention
- Valves with unsealed or misaligned discs leak after repeated cycling
- Lack of standardised flanged connections leads to mismatched piping and installation delays
- Buyers need one supplier who can provide both small and large diameters in the same series
Where It Is Installed
- Isolation of water supply lines in HVAC systems where space between flanges is limited
- Throttling control on low-pressure heating circuits in district heating plants
- Process line shut-off in chemical and pharmaceutical plants using water-based media
- Pump suction and discharge isolation in municipal water stations with flanged piping
- Maintenance isolation on industrial process headers where manual control is required
Buyers It Suits
- HVAC and plumbing contractors sourcing flanged butterfly valves for building services
- Plant engineers specifying low-torque isolation valves for water and heating systems
- EPC firms standardising on flanged butterfly valves across multiple project sites
- Valve distributors stocking medium- and low-pressure valves with manual wormgear
- Facility managers replacing older gate valves with compact, low-maintenance alternatives
How It Is Built
- Flanged connection with bolt holes matching standard flange patterns
- Concentric disc design with central stem for balanced flow control
- Wormgear actuation for smooth manual operation and position locking
- Resilient seat for bidirectional sealing and low leakage
- Quarter-turn operation with handle or gear for open-close control
- Part of a flanged butterfly valve series covering DN10 to DN2600
Material Selection
- Body, disc, stem, and seat materials are confirmed per order based on the medium and temperature
- Seat and disc variants follow the options available in the DF3A001 series
- Material certificates are issued with the order upon request
How It Is Made
- Body castings inspected and machined on in-house fine machining equipment
- Disc and stem assembled with concentric alignment and seat fitted
- Wormgear unit attached and tested for smooth operation and torque consistency
- Valve assembled, cycled, and pressure tested before packing
- Marked, wrapped, and crated for container shipment from Tianjin
How It Is Checked
- Dimensional check of flange bolt pattern and face-to-face length before assembly
- Seat and shell tightness tested on the assembled valve
- Operating torque and full quarter-turn travel verified on every unit
- Testing conducted on the 10 sets of imported inspection and testing equipment
- Records maintained under the ISO 9001 quality management system
Certificates Issued With This Valve
- ISO 9001 quality management system certification
- ISO 14001 environmental management system certification
Certification statements are limited to the management system certificates the factory actually holds. Product-level approvals for your market are confirmed before order.
What Can Be Changed
- Seat and disc variant selected based on the medium and temperature of the buyer's line
- Wormgear or hand lever fitted depending on operational preference
- Flange drilling matched to the standard used on the buyer's piping system
- Private label marking and packaging available on OEM orders
- Mixed-diameter orders combined with other valves in a single container shipment
How It Compares With the Alternatives
| Flanged gate valve | The gate valve offers a full bore but is longer, heavier, and requires more space for operation |
|---|---|
| Wafer butterfly valve | The flanged version allows for easier disassembly and maintenance but adds more length than a wafer body |
| Butterfly valve with actuator | The wormgear provides manual control with position retention; an actuator would allow remote operation but adds cost and complexity |
| Concentric butterfly valve with lever | The wormgear gives better torque control and position holding, especially under pressure, compared to a simple lever |
Installing and Operating This Valve
- Confirm the flange standard, bolt pattern, and pressure rating before ordering
- Ensure the pipe flanges are clean and flat before installing the valve
- Insert the valve between flanges with the disc slightly open to avoid seat damage
- Tighten the flange bolts evenly in a cross pattern to prevent misalignment
- After tightening, open the disc fully and confirm smooth quarter-turn operation
- Do not use the valve as a pipe end closure during pressure testing
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Heat Supply
District heating primary and secondary circuit isolation balancing and expansion.
Preventing Seat Leakage in Butterfly Valves
Where butterfly valve seats actually fail and what to change in specification or installation.
DF3A001 Concentric Flange Butterfly Valve Wormgear and PN10 PN16 FAQ
What size and pressure rating is DF3A001?
It is a flanged butterfly valve in the DF3A001 series. The nominal diameter and pressure rating are confirmed on request based on your line specifications, as the same body is offered in multiple variants.
Can this valve be used at the end of a pipe run?
No. A flanged butterfly valve requires flanges on both sides for connection. For end-of-line service, consider a different body type with end connections.
Which materials are used for the body, disc, and seat?
Material selection depends on the medium and temperature on your line. We confirm the combination during the quotation and issue material certificates with the order upon request.
Can it be supplied with a different actuation method?
Yes. The valve can be fitted with a hand lever or a wormgear. The wormgear is standard, but other actuation types can be arranged on request.
Do you supply the larger diameters in the same series?
Yes. The DF3A001 flanged butterfly valve series continues through the larger nominal diameters, and our programme covers DN10 to DN2600 across all families.
What certification does the factory hold?
Tianjin MIC Valve Co., Ltd. is certified to the ISO 9001 quality management system and the ISO 14001 environmental management system.
How do I get a quotation?
Send the model, quantity, flange standard, and medium by WhatsApp or email, and our sales engineers will reply with a quotation and a confirmed specification sheet.
Get a Price for DF3A001 Concentric Flange Butterfly Valve Wormgear and PN10 PN16
Tell us the quantity, flange standard and the medium on your line. You get a quotation with a confirmed specification sheet, not a catalogue page.